How to handle Android power button events? -

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i want create android application opened in background when power button pressed twice.

i want know how can handle power button , choose happens when user press power button?

just have in safety apps sends sos messages on number of power key presses.

first need add following permission manifest file:

<uses-permission android:name="android.permission.prevent_power_key" />

it has 2 methods onkeydown() , onkeylongpress() @override these 2 methods performing actions.


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